18123980622 has 32 divisors (see below), whose sum is σ = 39568068864. Its totient is φ = 5488665600.

The previous prime is 18123980597. The next prime is 18123980627. The reversal of 18123980622 is 22608932181.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18123980627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20622 + ... + 191502.

It is an arithmetic number, because the mean of its divisors is an integer number (1236502152).

Almost surely, 2^18123980622 is an apocalyptic number.

18123980622 is an abundant number, since it is smaller than the sum of its proper divisors (21444088242).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18123980622 is a wasteful number, since it uses less digits than its factorization.

18123980622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172504.

The product of its (nonzero) digits is 82944, while the sum is 42.

The spelling of 18123980622 in words is "eighteen billion, one hundred twenty-three million, nine hundred eighty thousand, six hundred twenty-two".